JP2010051360A - Alignment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alignment apparatus which precisely and easily align the measurement origin of the measurement reference coordinate of an inspection bench with a foot-type center point being the center of a standing position. <P>SOLUTION: The alignment apparatus (stabilometer 100) including an inspection plate 11 on which a subjective person gets and a load measurement means (a load cell 12) for measuring the loads of a plurality of places acting onto the inspection plate 11, includes: a foot length measurement means (foot length measurement scale 41) which measures a foot length from the heel to the toe of the subjective person; and an alignment means (origin center upright scale 42) aligning the measurement origin 13 being the center of the inspection plate 11 with the foot-type center point 16 of the subjective person on the basis of the foot length measurement value measured by the foot length measurement means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an alignment apparatus for aligning a measurement origin that is the center of measurement coordinates of an inspection plate and a foot center point that is the center of the standing position of a subject.

A sway meter (stabilometer) is a foot pressure detection device that detects a vertical acting force of a plantar pressure when the subject is in an upright posture with a transducer and outputs the plantar sway as an electrical signal change. The center-of-gravity sway meter measures the center-of-gravity sway that appears in an upright posture simply by placing the subject upright on the examination table, and is a totally invasive test. Recording and measurement / processing of various parameters are automatically performed by the apparatus, and the results are recorded as graphs and numerical values. As a center-of-gravity sway meter, there is a technique for analyzing and evaluating the standing balance ability of a subject from the obtained center-of-gravity sway data and subject attribute information by capturing the subject's center-of-gravity position variation (for example, , See Patent Document 1).
In such a center of gravity shake meter, the precautions on how to stand the inspection table are shown as inspection standards. The precautions include the measurement origin of the measurement standard on the inspection table and the center of the foot shape that is the center of the standing position. It is mentioned that the points are matched and upright with closed legs.
JP 2003-79599 A

By the way, in recent years, a lot of equipment for center of gravity fluctuation and balance measurement / evaluation has been released, but the foot length value of the standing position correction requirement is inaccurate due to self-reporting, or the mechanism by the subject's sense There are many things that lack the accuracy, strictness, and reproducibility of the evaluator, such as those that roughly align, and those that align with the scale even if there is consideration.
Therefore, the present invention has been made in view of the above circumstances, and it is possible to accurately and easily match the measurement origin of the measurement reference coordinates of the examination table with the foot center point which is the center of the standing position of the subject. An object of the present invention is to provide an alignment device that can be used.

In order to solve the above-mentioned problem, the invention of claim 1 includes an inspection board on which a subject rides,
Load measuring means for measuring loads at a plurality of locations acting on the inspection plate;
A foot length measuring means for measuring the foot length from the subject's heel to the toe;
A position for aligning the measurement origin that is the center of the measurement coordinates of the inspection plate and the center point of the foot shape that is the center of the standing position of the subject based on the measurement value of the foot length measured by the foot length measurement means And an aligning means.

  According to the first aspect of the present invention, the foot length of the subject is measured by the foot length measuring means, and based on the measured foot length measurement value, the alignment means has the measurement origin of the inspection plate and the foot shape of the subject. Since the center point is aligned, the measurement origin of the inspection plate and the foot type center point can be accurately and easily matched.

The invention of claim 2 is the alignment apparatus according to claim 1,
The foot length measuring means is a foot length measuring scale provided on the inspection plate and having a scale on which the dimension of the subject's foot length is displayed,
The alignment means is written together with the foot length measurement scale and has a scale for aligning the foot center point with the measurement origin corresponding to the foot length measurement value measured by the foot length measurement scale. It is characterized by having an origin center standing scale.

  According to the invention of claim 2, the measurement origin of the inspection plate and the foot mold center point of the subject can be easily aligned by the foot length measurement scale and the origin center standing scale written together on the inspection plate. Can do.

The invention of claim 3 is the alignment apparatus according to claim 2,
On the inspection plate, a heel contact portion that makes contact with the subject's heel and aligns the heel, and a toe contact portion that makes contact with the toe of the subject and aligns the toe, Is provided.

  According to the invention of claim 3, since the heel contact portion and the toe contact portion are provided on the inspection plate, the heel and the toe contact the heel contact portion and the toe contact portion respectively. Thus, the heel and toe can be easily aligned.

The invention of claim 4 is the alignment apparatus according to claim 2 or 3,
The origin center standing scale has scales each displaying a distance position of 1/2 of the foot length measurement value measured by the foot length measurement scale in the longitudinal direction of the foot length from the measurement origin,
The measurement origin and the foot mold center point are aligned by bringing the toe and heel into contact with the displayed scales before and after, respectively.

  According to the invention of claim 4, the origin center standing scale has scales each displaying a distance position of ½ of the measured foot length measurement value in the longitudinal direction of the foot length from the measurement origin. Since the measurement origin and the foot center point are aligned by bringing the toes and the heel into contact with the scales before and after the alignment, the alignment is easy.

The invention of claim 5 is the alignment apparatus according to claim 3,
The toe contact portion is provided with a slider that is slidable in the longitudinal direction of the foot length with respect to the inspection plate,
In the slider, the foot length measurement scale and the origin center standing scale are written together,
By sliding the slider and bringing the toe contact portion into contact with the toe of the subject, a foot length measurement value is measured with the foot length measurement scale, and the foot center of the origin center standing scale is measured. By sliding the slider on a scale corresponding to the length measurement value, the toe contact portion is arranged at a distance position of ½ of the foot length measurement value from the measurement origin to the toe side. And

  According to the fifth aspect of the present invention, the toe contact portion is provided with the slider, and the foot length measurement scale and the origin center standing scale are also written on the slider, and the slider is slid to cover the toe contact portion. The foot length measurement value is measured by bringing it into contact with the toe of the examiner, and the slider is slid to the scale corresponding to the measured foot length measurement value of the origin center standing scale. As a result, the toe contact portion is arranged at a distance position of ½ of the measured foot length from the measurement origin to the toe side. Therefore, the measurement origin of the inspection plate and the foot mold center point can be easily aligned by bringing the toe into contact with the toe contact portion and placing the foot on the inspection plate.

Invention of Claim 6 is the alignment apparatus as described in any one of Claims 1-5,
On the inspection plate, a left and right positioning contact portion extending in the front-rear direction of the foot length is provided at a center position in the left and right direction in the measurement coordinates.

  According to the invention of claim 6, since the left and right positioning contact portions are provided on the inspection plate, the positions of both feet in the left and right direction can be obtained by riding on the inspection plate with the left and right positioning contact portions sandwiched between the left and right feet Matching can be performed easily.

The invention of claim 7 is the alignment apparatus according to claim 1,
The foot length measuring means is a distance detection sensor that detects a foot length measurement value of the subject,
The positioning means offsets the toe side from the center point of the foot shape of the subject placed on the examination board by a distance corresponding to ½ of the measured foot length value detected by the distance detection sensor. The measurement origin and the foot mold center point are aligned.

  According to the seventh aspect of the present invention, the foot length measuring means is a distance detection sensor, and the alignment means is the center of the foot shape of the subject by a distance corresponding to ½ of the foot length measurement value detected by the distance detection sensor. By offsetting from the point to the toe side, the measurement origin and the center point of the foot shape are aligned, so the subject can be positioned automatically just by placing the foot on the inspection board, and the operation is easy. And the alignment is also accurate.

  According to the present invention, it is possible to accurately and easily match the measurement origin of the inspection plate and the foot mold center point.

The best mode for carrying out the present invention will be described below with reference to the drawings.
[First embodiment]
In the present embodiment, a sway meter is described as an example to which the alignment apparatus of the present invention is applied.
FIG. 1 is a block diagram showing the overall configuration of the center of gravity shake meter, FIG. 2 is a top view of the force plate, and FIG. 3 (a) is a side view of the force plate.
The center of gravity shake meter 100 includes a force plate 1 and a computer system 2.
The force plate 1 includes a test plate 11 on which both feet of the subject ride, and a load cell (load measuring means) 12 provided on the test plate 11 to continuously detect load information. When the subject gets on the examination board 11, the load cell 12 detects the load information of the subject and outputs a detection signal to the computer system 2.
The inspection plate 11 has a substantially equilateral triangular plate shape. On the upper surface of the inspection plate 11, the measurement origin 13 that is the center position of the inspection plate 11, the coordinate axis in the X-axis direction that passes through the measurement origin 13 and extends in the left-right direction (foot width direction), and the measurement origin 13 pass. And a coordinate axis in the Y-axis direction extending in the front-rear direction (foot length direction). This XY coordinate axis becomes the measurement reference coordinate. The measurement origin 13 is the center of the inscribed circle of the regular triangle of the inspection plate 11.
Further, on the upper surface of the inspection plate 11, a heel contact blade (heel contact portion) 14 that performs positioning when the heels of both feet of the subject abut, and a toe that performs positioning when the toes of both feet contact. A contact blade (toe contact portion) 15 is provided. The heel contact blade 14 and the toe contact blade 15 are members that are long in the X-axis direction, and are disposed so as to face each other in the Y-axis direction. A magnet (not shown) or the like is embedded in the bottom surface of the flange contact blade 14 and is simply fixed to the inspection plate 11.

A slider scale (slider) 31 and a main body 32 are provided on the upper surface of the inspection plate 11. A magnet (not shown) or the like is embedded in the bottom surface of the main body portion 32 and is simply fixed to one vertex portion of the three vertex portions of the inspection plate 11. The body portion 32 is formed with a slide hole 32 a into which the slider scale 31 can be slidably inserted in the Y-axis direction with respect to the body portion 32.
The slider scale 31 extends in the Y-axis direction, and is fixed to a surface 15a opposite to the surface with which the tip of the toe contact blade 15 contacts. Therefore, by sliding the slider scale 31 in the Y-axis direction with respect to the main body 32, the toe contact blade 15 is also slid in the Y-axis direction together with the slider scale 31.
The slider scale 31 includes a foot length measurement scale 41 and an origin center standing scale 42.
The foot length measurement scale 41 has a scale on which the dimension of the foot length from the heel to the toe is displayed. Here, the leg length specifically refers to the distance from the first finger to the heel. For example, as shown in FIG. 2, the scale is written in the range of 0 to 300 mm along the Y-axis direction, with the Y-axis direction tip position of the slider scale 31 being zero.
The origin center standing scale 42 slides the slider scale 31 to the distance position of ½ of the foot length measurement value measured by the foot length measurement scale 41 on the toe side in the Y-axis direction from the measurement origin 13. And a scale formed so that the toe contact blade 15 is disposed.
Therefore, the foot length measurement value is measured by the foot length measurement scale 41 by sliding the slider scale 31 and bringing the toe contact blade 15 into contact with the toe of the subject. Then, by sliding the slider scale 31 to the scale corresponding to the measured foot length measurement value, the toe contact blade 15 is positioned at a distance position of ½ of the foot length measurement value on the toe side in the Y-axis direction. Be placed. By bringing the toe into contact with the toe contact blade 15 arranged in this way, the measurement origin 13 and the foot center point 16 (see FIG. 6) are aligned. Here, the foot-shaped center point 16 refers to the case where the subject stands so that both legs are closed upright, i.e., the inner edges of both legs are in contact, the body is straightened, and stands in a natural posture. When standing in the + Y direction on the front and + X on the right side, the line connecting the midpoint of the line connecting the heels of the left and right feet and the midpoint of the line connecting the first fingers of the left and right feet respectively Say a bisection point.

FIG. 4 is a diagram showing a conversion table of foot length measurement values and slider scale return positions.
For example, when the leg length measurement value is 150 mm, the slider scale 31 needs to be slid by 75 mm with respect to the main body 32 and returned. The scale of the foot length measurement scale 41 and the scale of the origin center standing scale 42 are written together on the slider scale 31 in accordance with this conversion table. FIG. 4 shows an example of the conversion table, and is not limited to this. The foot length measurement values in FIGS. 2 and 4 are shown at a pitch of 10 mm, but a pitch of 1 mm is preferable.

  The load cell 12 is a well-known one that can measure a load in the vertical direction (Z-axis direction) acting on the inspection plate 11. The load cell 12 continuously detects the load information applied to each arrangement position, and outputs the detected load information to the computer system 2. A load information detection signal from the load cell 12 is input to the input / output interface 21 of the computer system 2.

As is well known, the computer system 2 includes an arithmetic processing unit 22 composed of a CPU, RAM, ROM, etc., input means 23 such as a keyboard and operation panel, a hard disk drive, a floppy (registered trademark) disk drive, and a compact disk drive. Auxiliary storage means 24, a display means 26 such as an LCD or a CRT display, and a printing means 27 as output means for outputting analysis data by the data analysis means 25 of the arithmetic processing unit 22 and the like.
The arithmetic processing unit 22 has a function as data analysis means (calculation means) 25. In the arithmetic processing unit 22, the position of the center of gravity is obtained by the data analysis unit 25 based on the load data measured by each load cell 12 with the subject on the inspection plate 11 of the force plate 1. The obtained center-of-gravity position 25 is output as an image to the display means 26 and printed and output by the printing means 27. The computer system 2 also includes an alarm unit 28.

In such a gravity center shake meter 100, there are other items analyzed by the data analysis means 25 as follows.
Analysis item
1. 1. Center of gravity fluctuation trajectory Total trajectory length (LNG.)
3. Unit locus length (LNG / TIME)
4). Unit area trajectory length (LNG / E.AREA)
5). Peripheral area (ENV.AREA)
6). Rectangular area (REC.AREA)
7). RMS area (RMS.AREA)
8). Shaking average center displacement (DEV OF Mx, My)
9. Shaking center displacement (DEV OF Xo, Yo)
10. Romberg rate (Item 2-7 closed eye value / open eye value)
11. Power spectrum 12. Position vector 13. Velocity vector 14. 15. Amplitude probability density distribution Gravichart (EVALUATION; comparative evaluation graph with normal values)
Based on the above analysis items, the arithmetic processing unit 22 outputs to the display means 26 and the printing means 27.

Next, a method for aligning the measurement origin 13 of the inspection plate 11 and the foot mold center point 16 will be described.
5 and 6 are views for explaining a method of aligning the measurement origin of the inspection plate and the foot center point.
First, as shown in FIG. 5, the subject stands on the inspection plate 11 with the heel contacting the heel contact blade 14. Then, the slider scale 31 is slid in the Y-axis direction with respect to the main body portion 32 until the toe contacts the toe contact blade 15. The foot length is read on the scale of the foot length measurement scale 41 with the toe in contact with the toe contact blade 15 (for example, 150 mm in FIG. 5).
Next, as shown in FIG. 6, the slider scale 31 is slid with respect to the main body 32 and is adjusted to the scale of the origin center standing scale 42 corresponding to the measured foot length measurement value (for example, 150 mm in FIG. 6). After that, it stands up so that the toe contacts the toe contact blade 15. In this way, the foot center point 16 can be aligned with the measurement origin 13 of the inspection plate 11.

  As described above, according to the first embodiment, the toe contact blade 15 and the heel contact blade 14 are provided on the inspection plate 11, and the slider scale 31 is fixed to the toe contact blade 15. Since the slider scale 31 includes the foot length measurement scale 41 and the origin center standing scale 42, the slider scale 31 is slid and the toe contact blade 15 is brought into contact with the toe of the subject. Long measurement values can be measured. Then, by sliding the slider scale 31 on the scale corresponding to the foot length measurement value of the origin center standing scale 42, the toe contact blade 15 moves from the measurement origin 13 to the toe side by 1 / of the foot length measurement value. 2 are arranged at distance positions. Therefore, the measurement origin 13 and the foot mold center point 16 of the inspection plate 11 can be accurately and easily aligned by bringing the toe into contact with the toe contact blade 15 and placing the foot on the inspection plate 11.

In the above embodiment, for example, as shown in FIG. 3B, a long left and right positioning contact blade (left and right positioning contact portion) 17 may be provided on the Y axis along the Y axis direction. Therefore, by positioning the left and right positioning contact blades 17 between the both feet on the inspection plate 11, it is possible to easily align both feet in the X-axis direction.
Further, in the above embodiment, the measurement of the foot length is measured by sliding the slider scale 31 and bringing the toe contact blade 15 into contact with the toe of the subject. It is good also as a structure which measures a leg length measured value by making it contact | abut. In this case, although not shown in the drawing, the hook contact blade may be fixed to the slider scale, and the toe contact blade may be fixed on the inspection plate 11.

[Second Embodiment]
7 is a top view of the force plate, FIG. 8A is a front view of the heel contact blade, FIG. 8B is a top view of the heel contact blade, and FIG. 8C is a heel contact. It is a side view of a blade.
The center of gravity shake meter of the second embodiment differs from the case of the center of gravity shake meter 100 of the first embodiment in the method of aligning the foot mold center point with the measurement origin 13A of the inspection plate 11A. In addition, since the basic configuration of the sway meter of the second embodiment is the same as that of the sway meter 100 of the first embodiment, the description thereof is omitted.
Hereinafter, the inspection plate 11A of the center of gravity sway meter of the second embodiment will be described.
The inspection plate 11A has a substantially triangular plate shape. On the upper surface of the inspection plate 11A, as in the first embodiment, the measurement origin 13A, coordinate axes in the X-axis direction and the Y-axis direction are marked. This XY coordinate axis becomes the measurement reference coordinate.
Further, on the upper surface of the inspection plate 11A, a heel contact blade 14A that performs positioning by contacting the heels of both feet of the subject, a toe contact blade 15A that performs positioning by contacting the toes of both feet, A foot length reading blade 18A is provided. The heel contact blade 15A, the toe contact blade 14A, and the foot length reading blade 18A are plate-like members that are long in the X-axis direction and are disposed so as to face each other in the Y-axis direction.

  The scissor abutment blade 14A includes a bottom surface portion 141A that is fixed to the upper surface of the inspection plate 11A, and a standing portion 142A that is erected upward on a side edge facing the measurement origin coordinate side of the bottom surface portion 141A. It is substantially L-shaped in cross section. A magnet 143A is embedded in the bottom surface portion 141A, whereby the heel contact blade 14A is simply fixed to the inspection plate 11A and is detachable from the inspection plate 11A. Further, a slit is formed in the central portion of the standing portion 142A in the X-axis direction. A left and right positioning contact blade (left and right positioning contact portion) 17A extending along the Y-axis direction is fitted in the slit. 7 and 8C do not show the left and right positioning abutment blade 17A because of the drawings.

  The toe contact blade 15A includes a bottom surface portion 151A that is fixed to the upper surface of the inspection plate 11A, and a standing portion 152A that is erected upward on a side edge facing the measurement origin coordinate side of the bottom surface portion 151A. It is substantially L-shaped in cross section. A magnet (not shown) is also embedded in the bottom portion 151A, whereby the toe contact blade 15A is simply fixed to the inspection plate 11A and is detachable from the inspection plate 11A.

  The leg length reading blade 18A includes a bottom surface portion 181A that is fixed to the upper surface of the inspection plate 11A, and a standing portion 182A that is erected upward on a side edge facing the measurement origin coordinate side of the bottom surface portion 181A. It is substantially L-shaped in cross section. A magnet (not shown) is also embedded in the bottom surface portion 181A, whereby the leg length reading blade 18A is simply fixed to the inspection plate 11A and is detachable from the inspection plate 11A.

On the upper surface of the inspection plate 11A, in FIG. 7, a foot length measurement scale 41A is shown on the left side with the Y axis as the center, and an origin center standing scale 42A is shown on the right side.
The foot length measurement scale 41A has a scale on which the length of the foot length from the heel to the toe is displayed. For example, as shown in FIG. 7, the scale is written in a range of 0 to 300 mm along the Y-axis direction with the side edge 111 </ b> A of the inspection plate 11 </ b> A being zero.
The center-of-origin center standing scale 42A has a scale of the same foot length measurement value at each half distance position of the foot length measurement value measured by the foot length measurement scale 41A before and after the measurement origin 13A in the Y-axis direction. Has been.
Therefore, the toe contact blade 15A and the heel contact blade 14A are arranged on the scale of the origin center standing scale 42A corresponding to the foot length measurement value measured by the foot length measurement scale 41A. Then, the measurement origin 13A and the foot mold center point are aligned by bringing the toe into contact with the arranged toe contact blade 15A and bringing the heel into contact with the heel contact blade 14A.

  Other configurations such as a computer system (not shown) are the same as the configuration of the center of gravity sway meter 100 of the first embodiment, and thus the description thereof is omitted.

Next, a method of aligning the measurement origin 13A of the inspection plate 11A with the foot center point (not shown) will be described.
First, the subject brings the left footpad into contact with the side edge portion 111A of the inspection plate 11A, and the foot length reading blade 18A is brought into contact with the toe. Then, the scale of the foot length measurement scale 41A at the position in contact with the toe is read (for example, 250 mm in FIG. 7).
Next, the heel contact blade 14A and the toe contact blade 15A are arranged at the scale positions (for example, 250 mm in FIG. 7) according to the foot length measurement value of the origin center standing scale 42A. The right foot heel is brought into contact with the heel contact blade 14A, and the right foot toe is brought into contact with the toe contact blade 15A. Similarly, the heel and toe of the left foot are brought into contact with the blades 14A and 15A, and the left foot is aligned at the same position as the right foot. In this way, the foot mold center point can be aligned with the measurement origin 13A of the inspection plate 11A.

  As described above, according to the second embodiment of the present invention, the foot length measurement scale 41A and the origin center standing scale 42A are written together on the inspection plate 11A, and the origin center standing scale 42A extends from the measurement origin 13A. The measurement origin 13A and the center point of the foot mold are formed by having scales each displaying a distance position that is 1/2 of the measured foot length measurement value in the front-rear direction, and bringing the toe and heel into contact with the displayed front-rear scales. Therefore, the measurement origin 13A of the inspection plate 11A and the subject's foot mold center point can be accurately and easily aligned.

Note that the display method of the foot length measurement scale 41A and the origin center standing scale 42A is not limited to that shown in FIG. 7, and for example, as shown in FIG. 9, the foot length measurement scale 41B is formed on the right side of the Y axis. The origin center standing scale 42B may be formed on the left side of the Y axis.
FIGS. 10A to 10C are diagrams for explaining a method of aligning the measurement origin of the inspection plate and the foot mold center point when the inspection plate of FIG. 9 is used. In this case, reference numeral 19B is a reference line for aligning the heels of the foot length measurement scale 41B. As shown in FIG. 10A, the foot length is measured by aligning the heel of the right foot with the reference line 19B and reading the position of the toe on the scale of the foot length measurement scale 41B. Next, as shown in FIG. 10B, the heel and toe of the left foot are aligned with the scale of the corresponding foot length measurement value on the origin center standing scale. Further, as shown in FIG. 10 (c), the heel and the toe are adjusted to the same scale for the right foot in the same manner.
In addition, as shown in FIG. 11, for example, the foot length measurement scale and the origin center standing scale are displayed on the left side of the Y axis by forming a scale of the foot length measurement scale 41C, and the origin center standing position on the outside thereof. Scales of the scales 42C and 42C may be formed.

[Third embodiment]
FIG. 12 is a top view of the force plate.
The center-of-gravity sway meter of the third embodiment differs from the case of the center-of-gravity sway meter 100 of the first embodiment in the method of aligning the foot center point with the measurement origin 13D of the inspection plate 11D. In addition, since it is the same as that of the gravity center shake meter 100 of 1st embodiment about the fundamental structure of the gravity center shake meter of 3rd embodiment, the description is abbreviate | omitted.
Hereinafter, the inspection plate 11D of the center of gravity shake meter will be described.
The inspection plate 11D has a substantially equilateral triangular plate shape. On the upper surface of the inspection plate 11D, as in the first embodiment, the measurement origin 13D, coordinate axes in the X-axis direction and the Y-axis direction are marked. This XY coordinate axis becomes the measurement reference coordinate.

Further, on the upper surface of the inspection plate 11D, there is provided a heel contact blade 14D that performs positioning by contacting the heels of both feet of the subject.
A magnet (not shown) or the like is embedded in the bottom surface of the flange contact blade 14D, and is thus simply fixed to the inspection plate 11D.

An optical distance measurement sensor 5D for measuring the foot length is provided on the upper surface of the inspection plate 11D. The optical distance measuring sensor 5D is disposed at a position line-symmetric with the heel contact blade 14D with respect to the X axis. That is, the distance L / 2 between the heel contact blade 14D and the measurement origin 13D is equal to the distance L / 2 between the optical distance measurement sensor 5D and the measurement origin 13D, and the optical distance measurement sensor 5D and the heel contact. The distance L between the blade 14D and the blade 14D is known.
The optical distance measurement sensor 5D measures the distance n from the optical distance measurement sensor 5D to the toe by irradiating the toe of the subject with light. The signal of the measured distance n is output to the arithmetic processing unit 22. Thereby, the arithmetic processing unit 22 subtracts the distance n from the known distance L in advance, and the subtracted length becomes the foot length measurement value. Here, in the case of FIG. 12, the leg length measurement value is the distance L / 2, but the present invention is not limited to this.
In this way, the foot length measurement value is calculated, and 1/2 of the foot length measurement value is the distance value m from the toe to the foot center point. Accordingly, the arithmetic processing unit 22 offsets the foot shape center point 16D from the foot shape center point 16D to the toe side in the Y-axis direction by a distance corresponding to 1/2 of the foot length measurement value, thereby making the foot shape center point 16D the measurement origin of the inspection plate 11D. The calculation processing device 22 performs calculation analysis processing based on the measurement origin 13D.

  As described above, according to the third embodiment of the present invention, the distance detection sensor 5D is provided on the inspection plate 11D, and the subject is the distance corresponding to ½ of the foot length measurement value detected by the distance detection sensor 5D. Since the measurement origin 13D is aligned with the foot mold center point 16D by offsetting the foot mold center point 16D from the foot mold center point 16D to the toe side, the subject is automatically positioned only by placing his / her foot on the inspection plate 11D Are aligned, easy to operate, and accurate in alignment.

In the first to third embodiments, the inspection plates 11, 11A, 11B, 11C, and 11D have a substantially equilateral triangular plate shape, but are not limited to this shape. It may be an isosceles triangle or the like. When these trapezoids and isosceles triangles are used, the center of the inscribed circle is the measurement origin of the measurement reference coordinates.
Furthermore, in the first to third embodiments, the alignment device of the present invention is applied to the center of gravity sway meter 100. However, a load that simply measures the load balance between the front and rear and left and right of the subject without measuring the center of gravity movement. It can also be applied to a balance meter. Specifically, it can be applied to a split weight distribution meter for left and right feet. This is also in this case because it is necessary to precisely match the foot center point with the measurement origin of the inspection board of the distribution meter.

1 is a block diagram illustrating a first embodiment, and illustrating an overall configuration of a sway meter. It is a top view of a force plate. (a) is a side view of a force plate, (b) is a side view of a force plate showing a modification. It is the figure which showed the conversion table of the foot length measurement value and the return position of a slider scale. It is a figure for demonstrating the positioning method of the measurement origin of a test | inspection board, and a foot-type center point. It is a figure for demonstrating the positioning method of the measurement origin of a test | inspection board, and a foot-type center point. It is a top view of a force plate showing a second embodiment. (a) is a front view of the heel contact blade, (b) is a top view of the heel contact blade, and (c) is a side view of the heel contact blade. It is a top view of a force plate which shows a modification. (a)-(c) is a figure for demonstrating the positioning method of the measurement origin of a test | inspection board, and a foot type | mold center point at the time of using the test | inspection board of FIG. It is a top view of a force plate, showing another modification. It is a top view of a force plate showing a third embodiment.

Explanation of symbols

1,1A Force plate 5D Distance detection sensor 11, 11A Inspection plate 12 Load cell (load measuring means)
13, 13A Measurement origin 14, 14A 踵 contact blade (踵 contact portion)
15, 15A Toe contact blade (toe contact part)
16 Foot type center point 17, 17A Left and right positioning contact blade (left and right positioning contact portion)
22 arithmetic processing unit 25 data analysis means (calculation means)
31 Slider scale (slider)
32 Main body 41, 41A Foot length measurement scale 42, 42A Origin center standing scale 100 Center of gravity shake meter (alignment device)

Claims (7)

A test board on which the subject rides;
Load measuring means for measuring loads at a plurality of locations acting on the inspection plate;
A foot length measuring means for measuring the foot length from the subject's heel to the toe;
A position for aligning the measurement origin that is the center of the measurement coordinates of the inspection plate and the center point of the foot shape that is the center of the standing position of the subject based on the measurement value of the foot length measured by the foot length measurement means And an aligning device. The foot length measuring means is a foot length measuring scale provided on the inspection plate and having a scale on which the dimension of the subject's foot length is displayed,
The alignment means is written together with the foot length measurement scale and has a scale for aligning the foot center point with the measurement origin corresponding to the foot length measurement value measured by the foot length measurement scale. The alignment apparatus according to claim 1, wherein the alignment apparatus has an origin center standing scale.   On the inspection plate, a heel contact portion that makes contact with the subject's heel and aligns the heel, and a toe contact portion that makes contact with the toe of the subject and aligns the toe, The alignment apparatus according to claim 2, wherein the alignment apparatus is provided. The origin center standing scale has scales each displaying a distance position of 1/2 of the foot length measurement value measured by the foot length measurement scale in the longitudinal direction of the foot length from the measurement origin,
The alignment apparatus according to claim 2 or 3, wherein the measurement origin and the foot mold center point are aligned by bringing a toe and a heel into contact with the displayed front and rear scales, respectively. The toe contact portion is provided with a slider that is slidable in the longitudinal direction of the foot length with respect to the inspection plate,
In the slider, the foot length measurement scale and the origin center standing scale are written together,
By sliding the slider and bringing the toe contact portion into contact with the toe of the subject, a foot length measurement value is measured with the foot length measurement scale, and the foot center of the origin center standing scale is measured. By sliding the slider on a scale corresponding to the length measurement value, the toe contact portion is arranged at a distance position of ½ of the foot length measurement value from the measurement origin to the toe side. The alignment apparatus according to claim 3.   The left-right positioning contact part extended along the front-back direction of a foot length is provided in the left-right center position in the said measurement coordinate on the said test | inspection board, The any one of Claims 1-5 characterized by the above-mentioned. The alignment apparatus according to item. The foot length measuring means is a distance detection sensor that detects a foot length measurement value of the subject,
The positioning means offsets the toe side from the center point of the foot shape of the subject placed on the examination board by a distance corresponding to ½ of the measured foot length value detected by the distance detection sensor. The alignment apparatus according to claim 1, wherein the measurement origin and the foot center point are aligned.

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